South Dakota Historical Society Press

"Dakota Resources: The Pickler Family Papers and the Humphrey Family Papers at the South Dakota State Historical Society"https://www.sdshspress.com/journal/south-dakota-history-24-2/dakota-resources-the-pickler-family-papers-and-the-humphrey-family-papers-at-the-south-dakota-state-historical-societyhttps://www.sdshspress.com/@@site-logo/sdshp-logo.jpg

"Dakota Resources: The Pickler Family Papers and the Humphrey Family Papers at the South Dakota State Historical Society"